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Questions asked by users might not always be phrased in the clearest way.
The chemical formula you provided appears to be a representation of Barium Iodide (BaI₂). It shows the chemical symbol for barium (Ba) and two iodine atoms (I₂). The subscript '2' indicates that there are two iodine atoms per barium atom in the compound. However, the brackets and symbols are not standard chemical notation. For example, the 'chemarrow' and 'chemwrong' notations are not recognized in standard chemical formulas.